VS3345/VS32345
Table 8. Switching Characteristics Over Operating Range
T
A
= -40 C to +85 C, V
CC
= 5.0V + 10%
C
LOAD
= 50pF, R
LOAD
= 500Ω unless otherwise stated.
o
o
Symbol
t
PLH
, t
PHL
t
PZH
, t
PZL
t
PLZ
, t
PHZ
Description
Data Propagation Delay
(2,3)
(1)
VS3245
Min
Max
(3)
VS32245
(3)
Min
Max
1.25
0.5
0.5
6.6
4.5
Units
ns
ns
ns
through the switch
0.5
0.5
0.25
5.6
4.5
Switch Turn-on Delay: /OE, OE to A
n
, B
n
Switch Turn-off Delay: /OE, OE to A
n
, B
n
Notes:
1.
2.
See test circuits and waveforms.
This parameter is the calculated theoretical RC time constant of ON-state resistance of the switch and the specified load
capacitance when driven by an ideal voltage source (zero source impedance). This time-constant is on the order of 0.25 ns for
VS3345 and 1.25 ns for VS32345. Since this time-constant is much smaller than rise/fall times of typical driving signals, it adds
very little propagation delay to the system.
This parameter is guaranteed, but not production tested.
3.
Figure 6. AC Test Circuit and Switching Waveforms
AC Test Circuit
Load Switch Position
TEST
t
PLH
, t
PHL
S
1
7V
t
PLZ
, t
PZL
t
PHZ
, t
PZH
V
IN
DUT
450
Ω
V
OUT
500Ω
R
L
Open
Closed
Open
S1
Pulse
Generator
50
Ω
Input Conditions
Input voltage = 0 V to 3.0 V
t
r
= t
f
= 2.5ns (10% to 90%)
C
L
50
Ω=
Coax to
Oscilloscope
2001-04-12
Vaishali Semiconductor
Page 5
www.vaishali.com
747 Camden Avenue, Suite C Campbell CA 95008
MDSS-0010-01
Ph. 408.377.6060
Fax 408.377.6063
VAISH [ VAISHALI SEMICONDUCTOR ]
